Defibbing a person who was part of the raid is still interfering with the raid, and I know that because I was the one who killed him. O see this as a perfectly valid kill.

He was around the corner when he charged the defib. He did not do anything to that body and got killed. That kill was not valid.
There's no way the cops could've seen him charging that defib and he did not even have it out when he ran back.